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Model reference

LG AVNH126ELAC

Air Conditioner

2 documents38 error codes8 service modes

Available documentation

Service Manual

  • Universal Air Conditioner SVC MANUAL (Exploded View)161 pg
    Covers this model
  • Air Conditioner Service Manual - Single "A"-Inverter Type113 pg
    Covers this model
MyPros+ Max

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  • Step-by-step diagnostics from the service manual
  • Test values, resistance specs, and wiring references
  • Verified part numbers when replacement is needed
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Error codes (38)

CodeMeaning
01Indoor room thermistor error (open/short or faulty sensor).02Indoor inlet pipe sensor error (open/short or faulty sensor).03Remote controller communication error (wired remote controller).04Drain pump / float switch error.05Communication error between indoor and outdoor units.06Indoor outlet pipe sensor error (open/short or faulty sensor).07Different mode operation error.09EEPROM checksum error (indoor).10BLDC motor fan lock (indoor).21DC Peak / IPM Fault22CT2 Max current23DC Link low voltage (1ph24Low pressure / high pressure switch open.25Low voltage / over voltage.26DC compressor position detect error.27PFC/PSC fault error28DC Link high voltage (1ph29Inverter compressor over current32Discharge pipe temperature high for inverter compressor (≥105°C).33Discharge pipe temperature high for constant compressor (≥105°C).39Communication error between PFC Micom and INV Micom.40CT sensor error (open/short)41Inverter discharge pipe thermistor error (open/short).44Outdoor air thermistor error (open/short).45Condenser pipe thermistor error (open/short).46Suction pipe thermistor error (open/short).47Constant compressor discharge pipe thermistor error (open/short).48Outdoor unit suction temperature thermistor open/short.51Over capacity52Transmission error between inverter PCB and main PCB
View all 38 error codes
53Communication signal error between indoor and outdoor units (displayed at…60EEPROM checksum error (outdoor).61Condenser pipe sensor temperature high (≥65°C).62Heat sink sensor temperature high (≥85°C).63Condenser pipe temperature low.65Heat sink thermistor error (open/short)67BLDC motor fan lock (outdoor).73PFC fault error (S/W)

Service modes (8)

  • Auto Addressing (Synchro Operation)1
  • Child LockPress the preset and minute setup button simultaneously for 3 seconds
  • E.S.P. (External Static Pressure) Setting Mode1
  • E.S.P. Setting Mode (External Static Pressure)["1. Press the On/Off button to start the unit.","2. Push the Timer and Wind buttons simultaneously…
  • Forced OperationPress the ON/OFF button on the main unit display panel (for use when remote control is lost).
  • Forced Operation / Test Function["Listed as available function on all indoor unit types (Self Diagnosis, Test Function, Forced…
  • Installer Setting ModePress the designated button for 4 seconds until function code is displayed on the bottom of the LCD…
  • Test Run ModeFor ceiling cassette type

Full entry steps, exit procedures, and test sequences are available in Max.

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